Qhov sib txawv tseem ceeb ntawm pectin thiab lignin yog pectin yog ib qho acidic heteropolysaccharide pom nyob rau hauv nruab nrab lamella, thawj thiab theem nrab cell phab ntsa ntawm cov nroj tsuag, thaum lignin yog ib tug polyphenyl propane polymer pom nyob rau hauv nruab nrab lamella thiab theem nrab cell. phab ntsa ntawm cov nroj tsuag.
Nruab nrab lamella yog txheej txheej koom nrog cov phab ntsa ntawm cov phab ntsa ntawm ob lub hlwb uas nyob ib sab ua ke. Qhov nruab nrab lamella yog tsim los ntawm calcium thiab magnesium pectates. Lignin kuj pom nyob rau hauv nruab nrab lamella. Ntxiv mus, nws yog ib qho nyuaj rau qhov txawv nruab nrab lamella los ntawm cov thawj cell phab ntsa, tshwj xeeb tshaj yog nyob rau hauv lub hlwb uas muaj tuab phab ntsa ntawm phab ntsa. Pectin thiab lignin yog ob qho organic tebchaw pom nyob rau hauv nruab nrab lamella thiab cell phab ntsa ntawm cov nroj tsuag.
Pectin yog dab tsi?
Pectin yog ib qho acidic heteropolysaccharide tam sim no nyob rau hauv nruab nrab lamella, thawj thiab theem nrab cell phab ntsa ntawm terrestrial nroj tsuag. Nws yog structural polysaccharide. Lub ntsiab tseem ceeb ntawm pectin yog galacturonic acid. Galacturonic acid yog cov kua qab zib los ntawm galactose. Pectin tau raug cais tawm thawj zaug thiab piav qhia los ntawm tus kws tshuaj Fabkis txoj hu ua Henri Braconnot. Kev lag luam, nws yog tsim los ua cov hmoov dawb rau lub teeb xim av. Pectin feem ntau yog muab rho tawm los ntawm citrus txiv hmab txiv ntoo rau kev lag luam. Nws yog siv los ua tus neeg sawv cev gelling. Cov organic compound no tuaj yeem pom tshwj xeeb hauv jams thiab jellies. Nws feem ntau yog siv los ua tus stabilizer hauv cov khoom qab zib, tshuaj, thiab khoom qab zib. Tsis tas li ntawd, hauv cov kua txiv hmab txiv ntoo thiab mis nyuj haus, nws yog siv los ua cov khoom noj muaj fiber ntau.
Daim duab 01: Pectin
Pears, txiv apples, guavas, quince, txiv kab ntxwv, plums, gooseberries, thiab lwm yam citrus txiv hmab txiv ntoo muaj ntau ntawm pectin, thaum cov txiv hmab txiv ntoo mos xws li txiv apples, txiv hmab txiv ntoo, thiab strawberries muaj me me ntawm pectin. Ntawm pawg FAO / WHO tus kws tshaj lij pawg neeg tshaj tawm qhia txog cov khoom noj khoom haus ntxiv thiab hauv European Union, tsis muaj tus lej uas tau txais txiaj ntsig txhua hnub tau teeb tsa rau pectin. Yog li, pectin yog suav tias yog kev nyab xeeb rau tib neeg noj.
Lignin yog dab tsi?
Lignin yog cov organic polymer uas tsim cov khoom siv tseem ceeb hauv cov ntaub so ntswg ntawm cov nroj tsuag feem ntau. Cov polymer no tseem tuaj yeem pom hauv cov algae liab. Biochemically, nws yog polyphenyl propane polymer, thiab nws muaj nyob rau hauv nruab nrab lamella thiab theem nrab cell phab ntsa ntawm cov nroj tsuag. Nws yog ib qho tseem ceeb hauv kev tsim cov phab ntsa ntawm tes, tshwj xeeb tshaj yog hauv cov ntoo thiab cov tawv ntoo. Nws muab rigidity thiab tsis rot yooj yim heev.
Daim duab 02: Lignin
Lignin tau piav qhia thawj zaug los ntawm Swiss botanist A. P. de Candolle hauv xyoo 1813. Kev ua haujlwm lom neeg ntawm lignin yog sau cov chaw hauv cov phab ntsa ntawm tes ntawm cellulose, hemicelluloses, pectin Cheebtsam hauv vascular thiab txhawb cov ntaub so ntswg xws li xylem, hlab ntsha, thiab sclereid hlwb. Lignin tseem ua lub luag haujlwm tseem ceeb hauv kev ua dej thiab cov as-ham hauv cov nroj tsuag stems. Qhov tseem ceeb tshaj plaws ua haujlwm ntawm lignin yog kev txhawb nqa los ntawm kev ntxiv dag zog ntawm ntoo hauv cov nroj tsuag vascular. Ntxiv mus, lignin kuj muaj cov kab mob tiv thaiv, ua rau cov nroj tsuag ntawm phab ntsa tsis nkag mus rau phab ntsa ntawm tes. Kev lag luam, lignin yog siv los ua cov roj ntsuab super siv rau hauv cov roj hlwb.
Dab tsi yog qhov zoo sib xws ntawm Pectin thiab Lignin?
- Pectin thiab lignin yog ob qho tib si organic.
- Ob lub tebchaw muaj nyob hauv nruab nrab lamella thiab cell phab ntsa ntawm cov nroj tsuag hauv av.
- Lawv yog biopolymers.
- Ob lub tebchaw yog siv los ua lag luam rau ntau lub hom phiaj.
Qhov txawv ntawm Pectin thiab Lignin yog dab tsi?
Pectin yog ib qho acidic heteropolysaccharide tam sim no nyob rau hauv nruab nrab lamella thiab cell phab ntsa ntawm cov nroj tsuag, thaum lignin yog ib tug polyphenyl propane polymer tam sim no nyob rau hauv nruab nrab lamella thiab theem nrab cell phab ntsa ntawm cov nroj tsuag. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm pectin thiab lignin. Tsis tas li ntawd, pectin tau piav qhia los ntawm tus kws tshuaj Fabkis txoj hu ua Henri Braconnot, thaum lignin tau piav qhia los ntawm Swiss botanist hu ua AP de Candolle.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm pectin thiab lignin hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Pectin vs Lignin
Pectin thiab lignin yog ob lub biopolymers. Lawv pom nyob rau hauv nruab nrab lamella thiab cell phab ntsa ntawm terrestrial nroj tsuag. Pectin yog ib qho acidic heteropolysaccharide pom nyob rau hauv nruab nrab lamella, thawj thiab theem nrab cell phab ntsa ntawm cov nroj tsuag, thaum lignin yog ib tug polyphenyl propane polymer pom nyob rau hauv nruab nrab lamella thiab theem nrab cell phab ntsa ntawm cov nroj tsuag. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm pectin thiab lignin.
